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3 years ago

Math question!!!!!!!!!!!!!

Mathematics

2 answers:

BlackZzzverrR [31]3 years ago

8 0

Answer:

the correct answer for that would be identity property

ad-work [718]3 years ago

7 0

Answer:

first one

Step-by-step explanation:

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You commute to work a distance of 40 miles and return on the same route at the end of the day. Your average rate on the return t

boyakko [2]

Answer:

The average rate on the outgoing trip is 30 miles per hour.

Step-by-step explanation:

Consider the provided information.

You commute to work a distance of 40 miles and return on the same route at the end of the day.

Your average rate on the return trip is 30 miles per hour faster than your average rate on the outgoing trip. If the round trip takes 2 hours.

Let the average rate on the outgoing trip is x

Average rate on the return trip = x+30

As we know $Time=\frac{Distance}{Speed}$

$\frac{40}{x}+ \frac{40}{(x+30)} = 2$

$\frac{40(x+30)+40x}{x(x+30)}= 2$

$40x+1200+40x= 2(x^2+30x)$

$80x+1200= 2x^2+60x$

$2x^2-20x-1200=0$

$x^2-10x-600=0$

$x^2-30x+20x-600=0$

$(x-30)(x+20)=0$

The value of x can't be a negative number so x=30

Hence, the average rate on the outgoing trip is 30 miles per hour.

6 0

3 years ago

. Where does the line y = 3x + 5 cross the y-axis?

Leto [7]

Answer: at 5

Step-by-step explanation: the 3 is the slope and the 5 is the y intercept. The y-intercept corresponds to the value of 5 when the x value is equal to 0

4 0

3 years ago

Need help ASAP!!!!!!

Mnenie [13.5K]

Answer:

Mean = 2.95

Median = 3

Step-by-step explanation:

The mean of the number of visits of 40 adults to the gym is

$\dfrac{0\cdot 4+1\cdot 3+2\cdot 12+3\cdot 5+4\cdot 8+5\cdot 5+6\cdot 2+7\cdot 1}{40}=\\ \\=\dfrac{3+24+15+32+25+12+7}{40}=\dfrac{118}{40}=2.95$

The median of the data is the average number between 20th and 21th terms (because 40 is even number, so the middle term is the average between two middle terms).

20th term = 3 visits

21th term = 3 visits

Hence, median is 3 visits

6 0

3 years ago

Which quotient matches the description of solving with partial quotients for 240÷15

Illusion [34]

Answer:

C. 16

Step-by-step explanation:

240/15

Step one: 10x15= 150

240-150= 90

Partial quotient: 10

Step two: 6x15= 90

90-90= 0

Partial quotient: 6

Step 3: 10+6= 16

Answer check: 240/15= 16

3 0

2 years ago

Find the surface area of the triangular prism (above) using its net (below).

r-ruslan [8.4K]

Answer:

96 square units

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the attached photo.

My answer: